Answer / jinboll

The transformer EMF equation shows that the EMF induced in the secondary or the primary side of a transformer is directly proportional to the product of the flux (Φm) through the transformer core and the frequency. This leads to the flux is proportional to E/f.
For example, the kVA rating of the 500v to 250v 60 Hz transformer will be smaller when used in Europe with a frequency of 50Hz.
500/60 = E/50 E is smaller than 500v on primary side.
250/60 = E/50, E is smaller than 250v on secondary side.

What is floating earthing?

2 Answers   Equate,

---

How wire size can define in electrical wiring? What is the ratio?

0 Answers   Descon,

---

why voltage swells and dips???

3 Answers  

---

what is the difference between line voltage meter and relays

4 Answers   TCS,

---

Our Company's Contract Demand is 110 kVA. We use 12 Capacitors each of 12.5 kVAr Capacity to maintain Power Factor of 0.99. So, what steps should we take so that our Contract demand does not exceed 110 kVA?

1 Answers   Jindal,

---

Whats the diference between Induction motor and servo motor

3 Answers   Essar, PMT Machines,

---

For two systems transmitting the same amount of real power, the system with the lower power factor will have higher circulating currents due to energy that returns to the source from energy storage in the load.???

0 Answers   Bhel,

---

Please tell me the earthing procedures adopted for the STAR-STAR 3 Phase transformer in india and give a better sugession for earthing

0 Answers  

---

what is difference between elr and R eartl realy.

0 Answers  

---

What is means by MacAdam Ellipse?

1 Answers  

---

what is the significance of KV & MVA rating of the transformer and how they are related.

8 Answers  

---

if the synchronizing b/w generator and busbar not complete and we close the out going circuit breaker of generator then what happen ?

4 Answers  

---